Bed-davenport



Dec. 16, 1952 M. s. KARPEN 2,521,337

BED DAVENPORT Filed Nov. 9, 194e :s sheets-sheet 1 M. S. KARPEN BEDDAVENPORT Dec. 16, 1952 5 Sheets-Sheet 2 Filed Nov. 9, 1946 /fef 3Sheets-Sheet 3 l l l 1 l l l l ||4||||||||llllll`l|||||||||l ||l||||||||||V|||| VM. S. KARPEN BED DAVENPORT Dec. 16, 1952 Filed Nov. 9,1946 Patented Dec. 16, 1952 UNITED STATES PATENT OFFICE 8 Claims.

This invention relates to a bed-davenport, and more particularly to abed-davenport which presents one reclining surface when the apparatus isused as a bed and a seperate reclining surface when it is used as adavenport.

A bed-davenport comprises apparatus which is adapted to be used eitheras a bed or a davenport, and when arranged for use as a davenport thebed portion is folded inside the structure to an inoperative positionwhere it is out of sight and out of the way, thus distinguishing thistype of apparatus from a roll-a-way wherein the bed structure does notfold inside the davenport structure, but may merely comprise a cotadapted to be stored underneath the davenport.

Among the features which are desirable in such a bed-davenport are rst,the apparatus should be easily convertible from a davenport to a bed andvice versa; second, the structure should be as compact as possible;third, the apparatus, especially when set up as a davenport, shouldpresent a pleasing appearance and should preferably resemble an ordinarydavenport as much as possible; fourth, the apparatus should be of simpleand sturdy construction; fth, the apparatus should be comfortablewhether it is used as a davenport or as a bed.

Although many bed-davenports have been devised in the past they are allsubject to certain disadvantages or shortcomings when compared with theabove mentioned desirable features. For example, many of such prior artdevices require that the bed structure be folded into three or moreparts when the apparatus is converted to a davenport, and that theseparts be inverted or folded back upon themselves so that they may bestored within the davenport structure. Such a construction is obviouslydisadvantageous, for the parts are heavy and cumbersome and do notreadily lend themselves to inversion and folding. Furthermore suchstructures are often highly complex, and the parts easily become jammedor in some other manner get out of order.

Many of such prior art devices are exceeding- 1y bulky when used as adavenport, this bulk being necessary in order to give room in which tostore the bed structure, and it has often been attempted to minimizethis disadvantage by utilizing the same reclining surface when theapparatus is used as either a bed or a davenport. This has obviousdisadvantages, for since the upholstery of the davenport may beexpensive it is very often desirable to provide a bed surface other thanthis upholstery. Furthermore, the contours of the upholstered seat andback member do not readily lend themselves to provide a sleepingsurface.

I have devised and am here disclosing and claiming a bed-davenport whicheliminates the disadvantages of all known prior art structures, andwhich includes all of the desired features set forth above. My newbed-davenport includes a two section bed frame and is easily and simplyconverted from a davenport to a bed and vice versa, since the bed framemerely pulls out from the davenport structure, and is not necessary toinvert any portions of the relatively heavy and bulky bed frame inmaking such conversion. My apparatus includes a novel linkingarrangement between the bed frame sections and other portions of theapparatus, which linking arrangement allows the apparatus to operateeiiciently and smoothly and to be very easily converted when desired.When the apparatus is used as a davenport the front section of the twosection bed frame rests beneath the upholstered seat, and the backsection is arranged at substantially right angles to the front sectionbehind the upholstered back, and when it is desired to use the structureas a bed my novel linking arrangement allows the front section to swingupwardly and forwardly and the back section to swing downwardly andoutwardly without striking the supporting frame, until such sections arein alignment with each other to provide the bed surface. Such aconstruction results in a very compact unit, and my improved linkingarrangement allows the parts to swing from davenport to bed position ina minimum of space, and therefore I am able to construct my apparatus toresemble an ordinary davenport. This is facilitated because the bedstructure is equally divided beneath the seat and behind the back.

Since I use only a two part bed frame and since neither of the partsrequire inversion or folding back one upon the other, my linkingarrangement is simple and sturdy, and there is no danger of the partsjamming or in some other manner getting out of order. tage of myimproved structure is that my improved bed-davenport may include a bedspring of substantial depth, as for example a box spring, and a fullsize mattress (a felt mattress or'even an inner-spring mattress ifdesired), thereby presenting a comfortable full double bed sizereclining surf-ace which may be, for example 54 inches wide, when theapparatus is used as a bed, and the novel construction mentioned aboveallows this full size spring and mattress to be car- Y, ried by the bedframe so that they are completely A further advanl3 out of sight and outof the way when the apparatus is set up as a davenport.

These and other features and advantages of this invention will beapparent from the following specification and from the drawings, inwhich:

Figure 1 is a section through a bed-davenport embodying my inventions,showing the parts in one position; Figure 2 is a section through thebeddavenport showni in Figure l, but showing the parts in anotherposition; and Figure 3 is a section through the bed-davenport shown inFigure 1 showing the parts in still another position.

Referring now to the drawings, one particular form or" apparatusembodying my invention is shown in Figure 1 as being arranged asaidavenport. Figure 3 shows the same apparatus ar` ranged as a bed,while Figure 2 shows the apparatus with the parts in an intermediate-position. The apparatus comprises a frame which may be constructed ofwoodor other suitable material and which comprises a front member it, `aside piece l'l, and' a back yframework including a back member I2, a topmember I3 and a back cushion support Ill which is fastened to the topmember I3 in such manner that a well or'rec'ess exists therebetween.

The davenport structure is'completed through the upholstered back I5 andthe upholstered front IS. Whilethe members I5 and i6 are referredthroughout thisspecication and claims as being singular, it wiilbeunderstood'that suchrespective members may each be made up of two ormore upholstered members 'if desired. rlhe back I5 comprises a'supporting member I5dJ and a member Ib which'may be upholstered in anymanner desired and which may be designed with internal springs andpadding in the conventional manner. In theembodiment illustrated theback is movable and is shown asbeihg mounted on the forward end of thetop member I3 by means of the simple hinge II so that the member can beswung upwardly to apo'sition above the supporting frame, althoughanyother type of 'mounting maybe used if desired.

r)The upholstered seat l which also include conventional springs Yandpadding, is movably connected tothe frontin'ember le of the supportingframe, such connection being here shown asv a pivotal mounting about amoving center. A bracket I8 isk carried by Said seat and extendsdownwardly (in Figure l) from the lower front corner of said seat toprovide a mounting bracket and a step or rest as shown in Figure 1 .l Anl.- shaped link member I9 is pivotally connected to such bracket, theother end of this L-shaped link being pivotally connected to one end ofanother link 20, the other end of which is pivotally connected to theside piece II adjacent the front member Hl. A link 2l has one endpivotally connected to the protruding end of the bracket I8, and itsother end is pivotally connected to a link 22, the other end' of thislast mentioned link being pivotally connected to the side piece I Ibehind and below the point where the link 2i) is connected to said sidepiece. The link members 20 and 2l are pivotally joinedintermediate'their ends at 23 where said members cross each other.

This construction results in the seat I6 being pivotally mounted about amovable center, and said seat may be swung upwardly and forwardly of thesupporting frame and inverted to the position shown in Figures 2 and 3.When in such position the inverted forward portion ofthe seat issupported by the leg'24 and the rear portion of the seat is moved awayfrom the front member I0 and is supported by the linking arrangementjust described. These support members are so constructed that when saidmember is inverted its upper surface is as high above the floor as isthe top of the front supporting frame member I0. It will be understoodthat the linkage just described at one end of the bed-davenport isduplicated at the other end.

The bed structure of my new bededavenport comprises a two section frame,vone side of the front section consisting of the channel iron 25 -whichis adapted to rest beneath the seat when in inoperative position, aswhen the structure is being used as a davenport, and a back section oneside of which comprises the channel iron 26 which 4is adapted to rest ininoperative position at right angles to the front section and behind theupholstered back when the structure is made up as a davenport. Of coursesimilar frame members are used at the other end of the structure,v andthere are lalso va plurality of members connecting the side members ofthe respective frames. A two section bedspring of substantial depth,here shown as a box spring comprising the sections 2'1 and 28, iscarried by the two section frame. The spring section 2i is bolted to thefront frame section and the spring section 28 is bolted to the backframe section. 'lne sprung sections each nave a width equal to thelength of the channel irons 25 and land are of suon a depth thatadjacent edges of said spring sections approach each other. If 1t isoesiredtne sections may oe hinged together along these adjoining edges.A mattress 29 may be carried by the two section spring to provideareclining suriace when the apparatus is made'up as a bed. y l

In the past it has been found very diihcult'to design a bed structurewhich could be brought out from within the davenport structure Withoutinverting one or more of the bed structure parts or without designing anexcessively bulky davenport in order to allow the bed structure to clearthe frame. I have devised a simple but novel linking arrangement wherebythe parts are linked to each other and to the supporting frame in suchmanner that the front frame section moves upwardly and forwardly and theback vframe section moves downwardly and forwardly and into alignmentwith the front frame section to form a bed surface. My improved linkingarrangement allows these operations to take place while the framesections carry the box spring and the mattress, and the bed structureclears the supporting framework, while at the same time the wholeapparatus is constructed with little more bulk than is found in aconventional davenport.

Horn shaped bracket members 30 and 32 connect adjacent portions of saidframe sections, the bracket 3Q being rigidly secured near the bottom orthe pack iraine section niemeer ze by means of the bolts or rivets 3 I,and the similar horn shaped bracket member 32 being rigidly secured nearthe back of the front frame section member 25 by means of the bolts orrivets 33, these bracket members being pivotally joined together at 34by means of a bolt or rivet. My apparatus is so constructed that thepivot point 34 is spaced from each of said frame sections a distancesubstantially equal to the depth of the bed spring so that as the frontand back frame sections pivot with respect to each other the bed springswill stay close together, and when the frame sections are in alignmentwith each other the bedspring sections will adjoin or even touch eachother.

At each end of the bed-davenport three linkage systems join theapparatus together so that the frame sections can be moved from theinoperative position shown in Figure l to the operative position shownin Figure 3 without inverting either section. The linking means to behereinafter described comprise linkage systems each including linkingmembers which are all pivotally connected. In the description of suchlinkage systems it will be understood that every connection of each linkmember is pivotal, and in order to shorten the description, suchconnections will not be again referred to as being pivotal. The rstlinkage system comprises a link member 35 connected between a low andrear point on the supporting frame and a point on the back frame sectionmember 26 above the center of said frame section. In the embodiment ofmy invention illustrated in the drawings this link member is connectedby means of a rivet 36 to the bracket 31, said bracket in turn beingconnected to the side piece I I by means of the bolts 38. The other endof the link member 35 is connected to the back frame section member 26at a point 39 above the center thereof by means of a bolt or rivet.

A second linkage system is connected between a higher and more forwardpoint on the supporting frame and a lower point on the back section, andcomprises a link member 4I] connected to the side piece I I by means ofthe bracket 4I, the other end of said member being connected to the linkmember 42 which is connected to the back frame member 26 at a pointbelow the point of connection 39.

A third linkage system is connected between an intermediate point onsaid supporting frame and a still lower point on the back section, andcomprises a link member 43 connected to the side piece II at a pointbetween the brackets 31 and 4I, the other end of said link member beingconnected by the link member 44 to the back frame section member at alower point than the point of connection of the link members 35 and 42.The second and third linkage systems are interconnected by means of alink member 45 which is connected between the point of connection of thelink members 43 and 44 on the one hand and the link member 40 at a pointintermediate its ends on the other hand.

Stop means comprising a block member 46 is secured to the side piece I Iby means of the bolts or rivets 4l and operates on the link member 35 tolimit the movement of the movable two section frame and to support theback end of such frame where the structure is made up as a bed.

At each end of the bed-davenport a fourth linkage system connects thefront frame section from a point near the forward end thereof to theseat I6, said linkage system comprising a link member 48 connected tothe front frame section member 25 at a point near the front edgethereof, the other end of said link member being connected to the linkmember 49 which is in turn connected to the seat at a point near thecenter of the bottom of said seat.

The apparatus is shown in Figure 1 as being made up as a davenport. Ifit is desired to convert the apparatus into a bed, the upholstered backI5 is pivoted upon its hinge II and swung upwardly to inoperativeposition above the supporting frame as shown in Figure 2. Theupholstered seat is then swung upwardly and forwardly, said seatpivoting about the movable center to a position as shown in Figure 2,and being supported in such position on the leg 24 and the linkagesystem earlier described.

The fourth linkage system described above causes the movable framesections to start their movement toward operative position as the seatis pivoted. This movement is caused because of the links 4B and 49, andwhen the seat is pivoted the front frame section moves forwardly andupwardly and the back frame section swings forwardly as shown in Figure2. The front frame section is then pulled forwardly, and the threelinkage systems heretofore described cause the two frame sections tomove into alignment with each other into the position shown in Figure 3.As can best be seen in Figure 2 the whole bed structure stays very lowin the middle in the initial stages of movement, thereby allowing theback frame section to swing down and clear the back cushion support I4,and the linkage arrangement causes proper alignment of the two framesections. The stop member 46 contacts the link 35 and stops forwardmovement of the frames and also acts as a support for the rear portionof the back frame. As shown in the drawings the box spring and themattress are carried by the frame sections `and are automatically movedto the proper position by the movements above described.

When it is desired to recouvert the apparatus into a davenport theoperations described. are simply reversed. That is. the front framesection is pushed backwardly, thus causing the back frame section toswing around to a substantially upright position and to clear the backframe support Iii during such movement. When the parts have reached theposition shown vin Figure 2 the seat I 6 is pivoted back around itsmovable center and the apparatus is now made up as a davenport.

While I have shown and described certain embodiments of my invention, itis to be understood that it is capable of many modifications. Changes,therefore, in the construction and arrangement may be made withoutdeparting from the spirit and scope of the invention as disclosed in theappended claims.

I claim:

1. A bed-davenport of the character described, including: meansconstructed in the form of a davenport having an enclosure therein, saidmeans comprising a supporting frame, an upholstered back adapted to forma portion of the reclining surface of the davenport only, and anupholstered seat movably connected to the front edge of said supportingframe and adapted to be swung forwardly of said frame and supported insuch forwardly position; a movable two section bed frame normallypositioned in said enclosure and comprising a front section and anadjacent back section ea-ch adapted to carry a box spring portion, saidbed frame sections being adapted to be moved from inoperative positionwithin said enclosure to operative position where they form a bedsurface; means connecting said bed frame sections at adjacent portions;pivotally connected linking means connecting said bed frame sections andsupporting frame in a manner enabling movement of said bed framesections from said inoperative position to said operative positionwithout inverting either section, said linking means comprising a firstlinkage system having pivotal connection with the supporting frame andsaid back section at one point, a second linkage system having pivotalconnection with the supporting frame and said back section accres??- at:another point,. a,..thirdilinkage. system having.

pivotal connection with the supporting. framerand said' back section ata thirdpoint, and linkage means pivotally connecting said second andthird linkage systems; and a fourth linkage system.

having pivotal connection with a forwardly point on said front sectionand a point on said seat near the bottom thereof, the connection of saidfourth linkage system between the front section and the seat causingforward and upward movement of saidfront section when said seat is swungVforwardly of said supporting frame, and the interconnection of saidlbed frame sections and the connectionv of said three linkage systemsbetween said bed 'frame sections and said supporting frame guiding saidback section and causing it to move into horizontal operative positionadjacent said "front section and in the horizontal plane-thereof uponforward and upward movernentiof said front' section-into operativeposition.

2. -A'bed-davenport of the character described, including: a supportingframe; an upholstered back adapted to form a portion of ie recliningsurface of the davenport only; an upholstered seat pivotally connectedabout a movable .center tothe front edge of said supporting frame andadapted` to beswungforwardly of said frame and supported in suoliforward position; movable twosection framecomprising a front section andaback section each adapted to carry a bed spring portion, said framesections being adapted to be moved from a substantially right angulararrangement into `alignrment with each other; means-connectingsaid'fra'me sections at adjacent portions; pivotailyv connected linkingmeans enabling movement of said frame sections without inverting eithersection, said linking means comprising a iirstlinlrage system connectedbetween a low and rear point on said supporting frame and a point onsaid back section above the center thereof, a second linkage systemconnected between a higher and more forward point on said supportingframe and a lower point on said back section, a third linkage systemconnected between an intermediate point on said supporting frame and a.still lower point on said back section, and linkage means connectingsaidsecond and third linkage systems; stop means mounted on saidv supportingframe and operative on saidfiirstlinkage' system for limiting the moveimentor' .said movable frame; and a fourth linkage system connectedbetween a forward point on said frontA section and a point onsaidseatnear Ahe bottom thereof.

3 A bed-davenport of thev character described, including: a-supportingframe; an upholstered back moi/ably connected to said supporting frame,said back being adapted to form a portion of the reclining. surface ofthe davenport only; an upholstered seat; pivotally connected about amovable center to the front edge of said supporting frame and adapted tobe swung forwardly of. said frame and supported in such forwardposition; a movable two-section frame comprising a front section vandaback section, said frame sections being adapted to be moved from asubstantially right angular arrangement into alignment with each other;a two portion boxspring of substantial depth, said spring portions beingmounted on said respective frame sections and being adapted tosupport amattress; means connecting said frame sections at adjacent ends, suchmeans comprising bracket members mounted on said respective.V frameAsections and pivotally connected at a pointspaced' from said framesections a distance 8. substantiallvtequal to the depth-.cf said spring;pivotally'connected.linking means enablingmovement of said. framevsections vwithout inverting either section, said linking meanscomprising a first. linkage system connected between alow'and rearpoint-on said supporting'frame.andk a point. on. said back section abovethe center thereof, a.

secondlinkage systemconnected between. a higher and more forward pointon said supporting frame anda lower point on said back section, a

thirdA linkage system. connected between an intermediate point on saidsupporting frame anda still lower point. on said vback section, andlinkage means connecting saidA second and third linkage systems; stopmeans mounted on said supporting frame and operative `on saidfirst-linkage system for limiting the movement of said movable-frame;and a fourthlinliage system connected between a forward point on saidfront section and a point on said seat near the bottomL thereof.

i. A bed-davenport of the character described,

including: a supporting frame; an upholstered back pivotally connecte-dto said supporting frame and adapted to be swung upwardly to a positionabove said supporting frame; an upholstered seat pivotallyconnectedabouta movable center to the front edge or saidsupporting frameand, adapted to be swung forwardly of said frame and supported in suchforward position, amovable two section frame comprising `a frontvsection and a back section each adapted to carry a bed spring portion,said front frame section being adapted to. be moved from inoperative'position beneath said upholstered seat to operative position lforwardof said supporting frame, and said-back frame section being adapted toVbe moved from inoperative position at a. substantialV right angle tosaid frcntsecticn and behindxsaid upholstered back to operative positionin alignment with said front section; means connecting'saidframe'sections at adiacent'portions; pivotally connected linking meansena-bling movement of said frame sections from inoperative tooperativepositions without inverting` either section, said .linking meanscomprising a first member connected between. a low and. rear point onsaid supporting frameand a point on said bacia section vabove the centerthereof, a second member connected to ay higher and more forward pointVonvsaid supporting frame, a third member connected betweena lower pointon said back section and said second member, a fourth member connectedto-an intermediate point on said supporting frame, a fth memberconnected between a still lower point on said baci; section and saidfourth member, and

sixth member connected between said second member at a pointintermediate the ends thereof and the point of connection of said fourthand fifth members; stop means mounted on said-supporting frame andoperative on said first member for limiting the movement of said movableframe; and another pivotally connected linkage system comprising a lowermember connected to-a forvard point on said front frame section and anupper member connected between such lower member and a point on saidseat near the bottom thereof.

5. na bed-davenport having an` enclosure comprising a supporting frameand upholstered seat and back members, at least one of said upholsteredmembers being movable and said members forming the reclining surface ofthe davenport only, a bed structure having a different recliningsurface, said bed. structure including: e, movable two. sectionbedirame. normallyy positioned insaid;

enclosure and comprising a front section and an adjacent back sectioneach adapted to carry a bed spring portion, said bed frame sectionsbeing adaptedto be moved from a substantially right angular arrangementwithin said enclosure into alignment with each other where they form abed surface; means connecting said bed frame sections at adjacentportions; and pivotally connected linking means connecting said bedframe sections and supporting frame in a manner enabling such movementof said bed frame sections without inverting either section, saidlinking means comprising a first .linkage system connected between a lowand rear point on said supporting frame and a point of said back section{'1'5 above the center thereof, a second linkage system connectedbetween a higher and more forward point on said supporting frame and alower point on said back section, a third linkage system connectedbetween an intermediate point on said supporting frame and a still lowerpoint on said back section, and linkage means connecting said second andthird linkage systems.

6. In a bed-davenport having an enclosure comprising a supporting frameand upholstered seat and back members, at least one of said upholsteredmembers being movable and said members forming the reclining surface ofthe davenport only, a bed structure having a different recliningsurface, said bed structure including: a movable two section bed framenormally positioned in said enclosure and comprising a front section andan adjacent back section each adapted to carry a box spring portion,said front bed frame section being adapted to be moved from inoperativeposition beneath said seat to operative position forward of saidsupporting frame, and said back bed frame section being adapted to bemoved from inoperative position at a substantial right angle to saidfront section and behind said back in said enclosure to operativeposition in alignment with said front section; means connecting said bedframe sections at adjacent portions; and pivotally connected linkingmeans connecting said bed frame sections and supporting frame in amanner enabling movement of said bed frame sections from saidinoperative position to said operative position without inverting eithersection, said linking means comprising a first member connected betweena low and rear point on said supporting frame and a point on said backsection above the center thereof, a second member connected to a higherand more forward point on said supporting frame, a third memberconnected between a lower point on said back section and said secondmember, a fourth member connected to an intermediate point on saidsupporting frame, a fth member connected between a still lower point onsaid back section and said fourth member, and a sixth member connectedbetween said second member at a point intermediate the ends thereof andthe point of connection of said fourth and iifth member.

7. In a bed-davenport having an enclosure comprising a supporting frameand upholstered seat and back members, at least one of said upholsteredmembers being movable and said members forming the reclining surface ofthe davenport only, a bed structure having a different recliningsurface, said bed structure including: a movable two section bed framenormally positioned in said enclosure and comprising a front section andan adjacent back section, said bed frame sections being adapted to bemoved from 10 normal inoperative position within said enclosure tooperative position; a two portion bed spring of substantial depth, saidspring portions being mounted on said respective bed frame sections andbeing movable with saidbed frame sections t0 form a bed surface when inoperative position; means connecting said bed frame sections at adjacentends, such means comprising bracket members mounted on said respectivebed frame sections and pivotally connected at a point spaced fromsaidframe sections a distance substantially equal to the depthv of 'saidspring; and linking means connecting said bed frame sections andsupporting frame in a manner enabling movement of said bed framesections from said .inoperative position to said operative positionwithout inverting either section,` 'said linking means comprising firstlink members connected between the supporting frame and said backsection at one point thereon, second link members connected between thesupporting frame and said back section at another point thereon, thirdlink members connected between the supporting frame and said backsection at a third point thereon, and a link connecting said second andthird link members, the connection of said link members between saidback section and said frame and the interconnection of said link membersguiding said back section and causing it to move into horizontaloperative position adjacent said front section and in the horizontalplane thereof upon forward and upward movement of said front sectioninto operative position; and stop means mounted on said supporting frameengaging said first link member for limiting the movement of saidmovable frame.

8. In a bed-davenport having an enclosure comprising a supporting frameand upholstered seat and back members, at least one of said upholsteredmembers being movable and said members forming the reclining surface ofthe davenport only, a bed structure having a different recliningsurface, said bed structure including: a movable two section bed framenormally positioned in said enclosure and comprising a front section andan adjacent back section each adapted to carry a box spring portion,said front bed frame section being adapted to be moved from inoperativeposition beneath said seat to operative position forward of saidsupporting frame, and said back bed frame section being adapted to bemoved from inoperative position at a substantial right angle to saidfront section and behind said back in said enclosure to operativeposition in alignment with said front section; a two portion box springof substantial depth, said spring portions being mounted on saidrespective bed frame sections; means connecting said bed frame sectionsat adjacent ends, such means comprising bracket members mounted on saidrespective bed frame sections and pivotally connected at a point spacedfrom said frame sections a distance substantially equal to the depth ofsaid springs; pivotally connected linking means connecting said bedframe sections and supporting frame in a manner enabling movement ofsaid bed frame sections from said inoperative position to said operativeposition without inverting either section, said linking means comprisinga rst member connected be tween a low and rear point on said supportingframe and a point on said back section above the center thereof, asecond member connected to a higher and more forward point on saidsupporting frame, a third member connected be- `fourth and :th members;y:mounted :on sa-id supporting frame: and opera- Vtween a lower point onsaidA back section Iand Ysaid ysecond member, a :fourth :memberconnected to anv intermediate point on said :supporting ends Vthereofand :the v'point of connection of rsaid and stop means tive on -saidrstlinking umember Vfor limiting. the movement of -said movable frame.

MARTIN S. KARPEN.

REFERENCES. `CITED "I'he'ollo'v'ving` references arehof record in'thefileV ofthis patent:

Number Number I2 UNITED STATES PATENTS.

NameV Date Roscoe Sept. 8, 1868 Karpen Dec. 12, 1911 Jones et Val Nov.4, 1913 Hawkins Nov. 18, 1919 Young Dec. 28, 1926 Thum Mar. 25, 1930Bergstrom Mar. 30, 1943 FOREIGN PATENTS Country Date Great Britain Feb.24:, 1933 Greatv Britain Mar. 28, 1935

